.footer {
  height: 4vh;
  width: 100%;
  position: fixed;
  left: 0;
  bottom: 0;
  line-height: 4vh;
  background: rgba(0,0,0,0.3);
  font-size: 0.3rem;
  box-shadow:0 0 15px 5px rgba(200,200,200,0.2) inset;
}
footer span{

}
@media(max-width: 992px) {
  .footer span {
    font-size: 12px;
    display: block;
  }
  .footer {
    height: 8vh;
  }
}
